Snow removing and melting apparatus



Oct. 12,1926. 1,602,476 A. H. BALLARD SNOW REMOVING AND MELTINGAPPARATUS Filed Feb. 6, 1925 3 Sheets-Sheet 1 Oct. 12 1926.

1,602,476 A. H. BALLARD SNOW REMOVING AND MELTING APPARATUS F i led R1925 3 Sheets-Sheet 2 3 a Oct. 12 1926. 1,602,476

A. H. BALLARD SNOW REMOVING AND MELTING APPARATUS Filed Feb- 6, 1925 :5Sheefs-Sheet 5 may Patented Oct. 12, 1926.

PATENT OFFICE.

ARTHUR H. BALLARD, 0F BOSTON, MASSACHUSETTS.

SNOW REMOVING AND MELTING APPARATUS.

Application filed February 6', 1925. Serial m. 7,288.

This invention relates to apparatus for removing and melting snow, iteing intended to provide means for removing accumulated snow from thepublic highway or from other areas and to dispose of the same by meltinthrough the application of heat in an efiective and cronomical manner.

While the invention may have useful ap plication to other, forms offuel, it is par ticularly adapted to use with liqu' fuel where anintense heat is created, an provision should be made for usefullyapplying to the melting of the snow all heat generated by the li uidfuel burner.

The invention wi 1 be best understood by reference to the followingdescription when taken in connection with the accompanying illustrationof one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claims.

In the drawings,

Fig. 1 shows a truck or automotive device equipped with a snow removingconveyor and a snow melting apparatus embodying one form of myinvention;

Fig. 2 is a longitudinal sectional elevation with the parts omittedtaken through the snow melting apparatus, some of the pipe connections,pumps, etc., being indicated more or less'diagrammatically by dottedlines;

- 3 is a transverse scctionalelevation with parts omittedon line 33 inFig. 1; and

Fig. 4 is a cross-section through one of the hot water spray pipes inthe melting chamber.

Referring to the drawings and to the illust/rated embodiment of theinvention therein'shown, the apparatus comprises a snow melting unit berably supplie by oil or other liquid fuel, is utilized to reduce thesnow to liquid and a conveying mechanism by which the snow is conveyedto the melting chamber, both being preferably portable and the conveyingmechanism being so -,arranged that it can work progressively along thestreet or other snow covered area and remove the snow therefrom andconvey it to the melting apparatus.

For this purpose the mechanism -is conve'niently mounted on a truck orother selfpropelled automotive device 5 equipped with means of whichheat, prefa suitable steering mechanism and the usual power plant whichmay be used to provide locomotion and also to supply the necessary powerfor driving the conveyor, pumps or other motor units required for thesnow removin and melting apparatus. Since the power p ant may be of anyusual or suitable construction and the conveyer pumps and other powerdriven devices may be connected thereto by simple power take-offsreadily understood by those skilled in the art, for the purpose ofsimplification the details of these drivin devices are not herein shown.

The principal parts .ot the snow melting apparatus are embodied in thestructure comprising a cylindrical sheet-metal, boiler-y shapedstructure 7 mounted on the body of the truck and including a combustionchamber 9 (Figs. 2 and 3), a meltin chamber 11 and suitable fluepassages, to described, above the melting chamber.

Referring more particularly to Figs. 2 and 3, the structure 7 includesan outer shell 13 and an inner shell 15 providing between them a waterspace or jacket 17, the outer shell being held at suitable intervals bya lattice-like support 19'which rests on the platform 21. The combustionchamber 9" extends the entire length of the structure, occup ing thelower part thereof, and is provided at the forward end with an oil orother liquid fuel burner 23. The latter may be of any desired type, butis referably in the form of a nozzle, to whic oil is supplied underpressure from a supply tank the tank and pump and other usual an wellunderstood burner equipment not bein herein shown. I 0 V he combustionchamber 9 18 separate from the melting chamber 11 by a heat transmissionwall 25 which, for the greater part oi'its length, is channeled orcorrugated as' shown in Fig.'3 so as to provide a heat transmission wallof greatly expanded area, many times greater than that. of a flatsurface, and permitting an efliclent transmission of heat produced. bythe mtense combustion of the oil in the combustion chamber 9 to the bodyof liquid which is maintained in the melting chamber whlle the apparatusis in operation. These channels or corrugations which extend lengthwisethe'melting chamber and combustion chamber prevail overthe entire wldthand length of the heat transmission wall except for a short s ace at thefront of the apparatus where t e wall is left flat so as to provide aspace 27 for free circulation of the liquid from one channel to another.

At the rear end of the combustion chamher the corrugated wall is cutaway at each opposite side of the structure to provide flue exitpassages 29 for the products of combustion, so that the latter take thepath indicated by the arrows (Figs. 2 and 3) and pass upward at the sideof the inner shell 15 to an overhead flue passage 31 (Fig. 3) where theyenter the rear or horizontal pas sages which are contained within theupper part of the shell and extend longitudinally from the rear to thefront at either side thereof. Longitudinal partition walls 33terminating shortof the front end of the shell are provided in thisoverhead flue chamber to provide a return flue passage 35 leading to aflue exit 37 at the rear, so that the products of combustion, afterescaping from the combustion chamber, pass upward at the rear thereof,thence toward the front, and finally to the rear of the shell beforeesca ing therefrom, this giving opportunity to a sorb a lar e portion ofthe excess heat therefrom whic would otherwise be wasted.

When the apparatus .is in operation a bath of liquid is maintainedsomewhat above the level of the plates 25 by means of one or moresuitably located overflow pipes 39 and the chamber is 0 an at each endabove the level of the liquld to permit the entrance and passage fromfront to rear of the melting chamber of one run of the endless conveyor41. The conveyor, therefore,

asses through a space in the melting chamer which is heated from belowthrough the combustion chamber and from above through the heat radiatedfrom the flue chamber.

The conveyer 41 comprises opposed sprocket chains 43 with connected snowremoving and conve 'in plates .45 mounted on the transverse re s 4carrying' the rollers 49 which are guided by a suitable trackwaycontained within the connected structure.

shown for this "sprocket wheels 55. :The co'nveyer in enterin the chute59 passes over the s rocket andfat or near the groudihsurface, iscarried over the guiding sprocket wheel 69 near the 0 on end of thechute. At that point the ates in reversing their movement are caused tocooperate with a scraper plate 71 to scrape upand remove the snow fromthe surface and convey the same up the chute and into the meltingchamber as the apparatus is progressively advanced.

The bottom of the chute has a Wheeled support 73 through which it isconnected and braced to the frame of the truck by the truss frame75,-there being preferably provided an. adjustingglcvice 77 by which itmay be raised or lowered relatively to the ground. The housings 51 and61 are so connected to the chute as to permit of necessary adjustment ofthe latter and also a sli ht tipping adjustment of the melting unitabout a horizontal axis to permit the maintenance of a proper workinglevel of the bath in the melting chamber and to hes the heattransmission wall 25 covered wit 1 liquid under varying gradientconditions. For this purpose the middle of the platform 21 has jointedsupport 79 and the front thereof is supported on jacks 81 operated froma power take oil on the vehicle by means of which the shell can betipped in one direction or the other to neutralize the efl'ect ofdifferent grades.

To utilize in full the h at of the burning fuel,'water from the meltingchamber is caused to circulate through the water space about thecombustion chamber and thence to be returned to the melting chamber.While this circulation'might be secured by other arrangements and thewater thus heated returned directly to the liquid bodyin the meltingchamber, herein circulation is provided by water withdrawn through theoverflow pipe 39, passed through the water jacket 17, and finally in itsheated state discharged in the form of a hot spray against snow carriedinto the chamber by the conveyer. The arrangement of pipes whichcontrols the distribution of this water is in dicated more or lessschematically in Fig. 2.

For thispurpose the overflow pipe 39 is connected to the intakeof a owerdriven ump 83 and thereby delivere to the water packet 17 through thedischarge pi e 85 and connection 87 to a manifold or hea er 89 extendinglongitudinally beneath-the shell and having a plurality of connections91 to the jacket distributed at intervals lengthwise the same so thatthe water is evenly distributed to all parts of the jacket. The jacket17 extends entirely around the shell as well .as about the ends thereof.The liquid entering the bottom of the water s ace passes upward throughthe same absor ing excess heat both from the bottom and sides'of thecombustion chamber, as well as from the whee 67, thence down the inclinechute flue passages at the top of the shell. At the m charge 85 is alsoconnected to a bpm pipe referably there is provi thence delivered to thetop thereof the heated liquid is discharged The pipes 117 and 110, aswill be underthrough a discharge manifold or header 98 stood by thoseskilled in the art, may be similar to the manifold 89 and connected atprovided with tperieratione 120 for forming intervals with the waterspace through the the sprays in me melting chamber. connections 95.Anguiplus hot water from the ump 11:, 10

To limit the pressure which the water ma rechard directlgo to tiellqllld forced into the water 'aclret may exert bat in the me tin?) chemthrough the u ainet the walls thereo the pump rhspi 121 controlled y thevalve 123.

(led a vent pipe 96 leedin to a standpipc 97 the utter carolpen to theatmosphere, such as 124, between 76 ried to a eight preferably lmtalight]; ex- -t1e muinfold 93 and the hot water supply ceeding theheight of the manlfol 93. pipe 111 and extended above the manifold Waterdelivered through the -etandpipe so that only the overflow from themanifold poses down the discharg pi 99 and is can he'drawn out ot theint-hot by the b liquid in the pump 113. no

melting chamber through c connection lOl In the operation of theuHp-uratue, us the where it assists in maintaining a circulation truckis advanced the snow lslozlgcrl b the through the liquid hath. scraperand the cooperative action 0 the The bypass pipe 96 is further connectedto conveyer bites is carried up by the latter a. dischargepipe 103 whichin turn is conthrough t to chute 50 and the housing 51 and 56 nected toa nozzle or a'aeries of nozzles 105 delivered directly into the meltingchamber. and arranged beneath the vehicle to (1 8- There it is droppedinto the hot bath maincharge the surplus water forcibly down Into tainedover the to of the corrugated or the street and through the pressurethereo clmnnelod bottom, 1e sprays of hot water and the heat containedtherein to assist in di h d i t th eonvnyer serving uo washing awe andreducing to peter 88 both to reduce more or less of the snow to possl leof the snow remains bewater and to wash the plates free from all hmd thescraper 7 T B F E 0 h accumulations of snow. The channeled hotwaterthrough the street flushing nozzles tom of the meltin chamber ntlords anim- Prefembly automatically y mensely expundo area of heating surfacevalve 107 such t all water dlachyreed so um the intense heat of thecombustion from the mm: m excess f the caymtp of chamber is effectivelytransmitted to the h ma d 8 o t e a glp p 9 1B bath, maintaining thelatter at a temperadiverted to the flushm nogmles. tare sulllcient toquickly melt the snow after Referring now to t e d scharge of heated thd li th t Th m l d snow :00 water from the dls ha g m m q tha 'deliveredto the bath is carried through the latter I8 delivered through the pl111 1 same until melted, this action beluga assisted l Intake f film p p1 3 and y B 1 by the movement of the conveyer t to plates w l' 1podfissure P 9 45 of which a itate the snow, antl thecircu- 115 Indfllwel'flfi Bk to the 8 chlmlation indu in the bath by the ctlcctnof 1Pmfembl m the form of b 9" the heat, the several sprays, and the water py g e more yx 1 s 117 from the overflow pipes 101 and 121. W 8lengthwise g c The overflow pipe 89 maintains tho bath d rec y llmve heconveyor 4 Mi P"! at a substantially content and suitable level P 1 117grandad h e above the channeled bottom 25 and conducts n rated 7 P We ia portion of the overflow to the jacket 17 thmughout i, P937 where itabsorbs excess heat which would shower of hot water 18 b y i edotherwise be wasted from the sides and hot- P E l 791 P "P tom of thecombustion chamber as well as the curled y, 38 fi -P 5 from the sidesand top of the flue pameges. 1

free from accumulated sn w and This being delivered back to the meltingh lfl M0 ll 'b' g F19 chamber, all possible heat units from the and attheeame t me eflectively redueinl and f l b ti n. a usefully a plied in191ml i a melting the snow. This is of particular im- If deslred ofl tmeHP mer V rtance-inthe case of a liquid fuel burner .eupphed fr m the:ump 11 h i g wliete the conduction of heat from the sides shown for iaPurpmm mermv and bottom-of the combustion chamber is,

' pipes 119 als n m fi-l l'o bt apt to be very great. While thisprovides veyer but hoping, to

dehverg pipe 1 1.5 @1 u e d ng e l means to conserve the maximum numberof the m ting oh I berxandbeneath e cepheat units'in the fuel, theconnection is such t It i 4 8- that eventually all snow reduced to wateris rg 0 th t m 1119? Water amped through the street flushing nozzlesspray s or =up from belorvlagainnt the fib wuhing and reducing to watermore or under Bid? 1 of the conveyor andthe -snow less of the snowremaining in the street. thereon. For the purpose of removing anyforeign snow matter that may be carried up into the meltingi chamber, atrap 125 is provided at the en of the melting chamber such that matterof any bulk carried into the chamber by the conveyor will be propelledor worked along through the chamber, up the inclined r" new a, pi

e m w I may p auto dit zically or by opening the hinged door 129. r

To assist in inducing a draft through the combustion chamber to removethe roducts of combustion the discharge end 0 the flue ma be providedwith one or more fans 181 which are driven in any suitableway, as by thedrive shaft 133 connected to the drive shaft for the conveyer sprocketwheel 57.

While I have herein shown for the purpose of illustration one ecificembodiment of the invention, it is to ennderstood that extensivedeviations may be made therefrom and oh in the form and relativearrangement 0? arts maybe had, all without departing 0111 the spirit ofthe in vention.

Claims:

1. A snow removing and melting apparatus comprising means forming aheating chamber, means forming): melting chamber above the heating chainr, conveyor means travers' the melting chamber to deliver to he meltingchamber, and means formin a water space contacting with the sides 0 thebeating chamber to receive 11 uid from the mcltin chamber and cheerexcess heat from the eating chamber.

2. A snow removin and melting apparatus comprisin' a com ustion chamberhaving a liquid cl burner, means forming a melting chamber having avvall heated by the products of combustion, conveyer means traversingthe melting chamber for delivering snow to the melting chamber, andmeans formin a water space communicating with the si es and be m 0f-thecombustion chamber to receive liquid from the melting chamber and absorbexcess heat from the combustion chamber, said apparatus having rovisionfor returning the heated water biom the water space to the melting cham-3. A snow removing and melting apparatus comprising means forming aheating chamber, a liquid fuel burner for said heating chamber, meansforming a snow melting space above the heating chamber, snow removingmeans comprising it conveys;

lll'l traversi said snow meltin s ace, water j eted walls for the eatingchambcr 4. A snow removing and melting appara tus having means forming acombustion chamber, means for-min an elongated melting chsmber'mpmted mthe combustion chamber by a. wall having an enlarged heat-.

ntopof 'stunti 31 over all ing surface, conduit means for conductingroducts of combustion from said combuson eghtmblelblnd as rated fromgaidhlileltmg am r yawn o positesai on heating surface, means ihcludinga conveg oi' traversing the melti chamber for delivern%( snow to the meting chamber water sc eted walls for the combustion amber, and means forcirculating melted snow water -through the jacket space of said wallsand discharging said water on the snow in said melting chamber.

5. A snow removing and meltingnpparatus comprising means forming aheatin chamber, said nesting chamber having fu burning means, meansformin a meltin chamber in heat transferring re alien to sai heatinchamber, means for delivering snow to sair melting chamber means forautomatically maintuini a liquid bath of substnntial depth in saimelting chamber, said bath extending substantially over all the wallseparating said melting chamber from the heating chamber, said apparatushaving provision for circulating the water from the melting chamber toabsorb excess heat from the heatin chamber and return the heated waterto i e liquid bath maintained above the heating chamber.

6. A snow removing and melting apparatus comprising means forming acombustion chamber, means forming a meltin" chamber, luwing a generallyhorizontal we 1 separating it from said combustion chamber, means fordelivering snow to said melting chamber means for maintaining a liquidbath in sai mcltin chamber said bath extending sul of said horizontalwall, and means for withdrawing the water from the upper part of theliquid bath and circulating the same to absorb the excess heat from theproducts of combustion and re turn the heated water to the snowdelivered to the melting chamber.

7 A snow removing and melting apparatus comprising means formin aheating chamber, means forming a meltin chamber in heat transferringrelation to said heating chamber, a conveyor travers said meltingchamber for delivering snow the melting chamber, water circulating meansfor circulatin water from the melting chamber to absor excess heat fromthe heating chamber, and means to deliver said heated water to saidmeltin chamber forcibly in the form of sprays bot from above and belowsaid conve er.

8. snow removing and melting apparatus comprising means forming aheating chamber and a superim d melting chamber separated from other bya wall, means for maintaining in said melting chamher a liquid bath ofsubstantial depth over substantially all of said wall, conveyor meanstraversing the melting chamber to products of combustion from saidheating the conveyor.

deliver the snow to said chamber and agitate the same therein, means forcirculating the water from the melting chamber to absorb excessheat fromthe heatin chamber, and means to return the heater water in the form ofa spray forciblydischarged against 9. A snow removing'and meltingapparatus comprising means forming a heating chamber, conduit means forconducting the chamber, means forming a melting chamber separating saidheating chamber from said conduit means, meansffor conveying snow tosaid melting chamber including a conveyer traversing said meltinchamber, and water circulating means" or circulating water from themeltin chamber in contact with thewalls of the 1eating chamber forjacketing said walls and returning the water to the melting chamber andspraying it over said convever.

7 10.18. snow removing and melting a paratus comprising meansforming a.com ms tion cham er, a liquid fuel burner for said combustion chamber,flue-exit passages above the combustion chamber, means forming a meltingchamber above the combustion chamber means for delivering snow to themelting chamber, said melting, chamber having means adaptedautomatically to maintain therein water of a substantial depth to form aliquid bath to receive the snow, means forming a water circulating spacein contact with both the walls of the combustion chamber and theflue-passa s for absorbing excess heat, and prov sion or returning theheated water from the water circulating gpace to the liquid bath in themelting cham- I i 'i 11. A snow removing and meltin apparatus havingmeans forming a com ustlon chamber, conduit means for conducting theproducts of combustion from the comgustion chamber, means forming amelting amber between the combustion chamber and conduit means, meansfor delivering snow to the melting chamber including a conveyortraversing said chamber, means forming a water circulating space incontact ,withthe walls '6Fthe combustion chamber for absorb' excess heattherefrom, and means for withdrawing the water froni the meltingchamber,circulating the same throuh the water space, and deliverin it int e form of a spray to the snow elivered to the melting chamber.

12, Asnow removing and melting apparatus having a. liquid: fuel burner,means forming a combustion chamber, means forming a melting chamberabove the combustion chamber, means forming a water circplat ing spaceexposed to the excess heat of the.

combustion chamber means for withdrawing the water from the' meltingchamber and form of a forcible spray to the snow in said circulating thesame through the water space, a conveyer passing throu h the meltingchamber, and means for de ivering the heated water from said water spacein the T0 melting chamber on said conveyer.

13. A'snow removing and meltin apparatus comprising means forming vaieating chamber, means forming a melting chamber in heat transferringrelation to said heating chamber,snow delivery means traversing themelting chamber, means forming wall cooling water passages arranged toabsorb excess heat from the heating chamber, and means for-circulatingwater from the melting chamber through said assages and deliverin" theheated water bac to the meltin chamber for discharge against said snowclivery means. 7

4 14. A snow removing and meltiri apparatus comprising means formingaiieatmg chamber, means forming an elongated meltin chamber in heattransferr' relation to said heating chamber, snow elivery anddistributing means traversing the melting chamber and means formingwater assages arrange to circulate water from t e melting chamber andback again for dischar against said snow delivery means while a sagesarranged to absorb excess'heat from the heating chamber and circulatethewater lot from thevmelting chamber and deliver the same with theabsorbed heat against the unmelted snow.

16. A snow removing and melting1 apparatus comprising means formin aeating chamber with flue chambers, means forminga meltingchamberseparatingesaid heating chamber from said flue cham rs and beingin heat transferring relation therewith snow delivery means for themelting chambar including a conveyer for traversing the same, meansforming water passages arranged to absorb excess heat from the fines,and means for circulating the water through said passages from themelting chambcr and no discharging it on the snow in the meltingchamber. V

1'1. A snow removing and me lting appa ratus. comprising means forming aheating chamber, means forming an elongated melting chamber in heattransferring relation to said heatingchamber, an endless conveyortraversing the melting chamber for deliverin snow totheuneltmg chamberand distr1 uting it therein, means forming wall cooling water assagesfor absorbin excess ter from said passages and forcing the waheat fromthe eatmg chamber, an means tel; into the elting chamber at highpressure.

for circulatingrthe water from the melt mg chamber t oug'h said passagesand for discharging the heatedwater therefrom on the snow delivered tothe melting chamber.

18. A snow removing and melting apparatus comprising means forming acombustion chamber, a flue for conducting the products of combustionfrom said combustion chamber, means forming an elongated melting chamberwith means .for delivering snow thereto and distributing it along thelength of the chamber, a heat conducting wall separating said flue fromsaid melting chamber, and means forming aheat conducting wall with anenlarged heating surface separating the combustion chamber from themelting chamber.

19. A snow removing and meltin-gt apparatus comprising means forming acom bustion chamber, means forming an ongated melting chamber with meansfo delivering snow thereto and distributing it along the len h of thechamber, means forming an en arged heating surface for the meltingchamber comprising a corrugated pr channeled heat conducting bottom wallfor the melting chamber separating the latter from said combustionchamber, and a flue for the products of combustion separated from themelting chamber by a heat-conducting top wall for said melting chamber.

20. A snow removing and melting apparatus having means forming a heatingchamber, an elongated means forming a melting chamber above the heatingchamber in heat transferring relation therewith, an endless conveyerpassing through the melting chamber, and a flue chamber connected to theheating chamber and extendingover the conveyer in heat transferringrelation to the conveyer.

21. A snow removing and melting apparatus having means forming a heatingchamber, means forming an elongated meltting chamber in heattransferring relation to the heating chamber, an endless conveyer fordelivering snow to the melting chamber and advancing the snow throughthe same, and a trap in communication with the end of the meltingchamber toward which the conveyer travels to receive from the meltingchamber foreign material delivered thereto.

22. Asnow removing and melting apparatus comprising means forming aheating chamber, means forming a melting chamber in heat transferringrelation to said heating chamber, means forming water circulatingpassages exposed to the heat of the heating chamber, means including apump for withdrawing water from the melting chamber and circulating thesame through said passages at low pressure, and means-uncluding a pumpfor withdrawing heated wa- 23. A snow removing and melting apparatuscomprising means forming a heatmg chamber, means. forming a meltingchamber, in heat transferring relation to said heating chamber meansformin water circulating passages exposed to the eat of the heatingchamber, means for, withdrawmg water from the melting chamber andcirculating the same through said passages uiider relatively lowpressure, an endless conveyer traversing said melting chamber fordelivering snow tothe melting chamber, a pump for forcing said heatedwater under relative- 1y high. pressure into the meltin and deliveringthe same in the hot water spray by the conveyer. 24. A paratus,comprising means forming a heating chamber, means forming a me] g orm oa against the snow delivered chamber a snow removing and meltingapchamber in heat transferring relatioirto said heating chamber, n eansformin ter circulating passages-exposed to the heat of the heatingchamber for heating w n in said passages, means for withdraw g waterfrom the melting chamber and circuhating the same through said passagesunder relatively low ressure, an endless conveyer traversing t e meltingchamber for delivering snow to the melting chamber, conduit meansincluding a pump and connections to said'water circulating passages forforcing heatedwater from said water circulating passages into themelting chamber and delivering the same in the form of a hot water sprayagainst the snow delivered by the conveyor and for delivering the heatedwater both upwardly and downwardly against the conveyer within ,themelting chamber.

25. A snow removing and melting apparatus having means forming acombustion chamber, means forming an elongated melting chamber separatedfrom the combustion chamber by a ting wall having an enlarged area,means for delivering snow to said melting chamber and distributing italong its length, means forming flue passages above the-heating chamberand extending lengthwise thereof, a wall-cooling water space forabsorbing excess heat from the combustion chamber and from the fluepassages, and a pump for forcing Water from the melting chamber throughsaid water space and utilizing the heated water for assisting in meltingthe snow.

26. In a snow removing and melting apparatus, the combination with meansorming a combustion chamber, of fuel burning means in said chamber,means forming a melting chamber in heat transferring relation to saidcombustion chamber and with an delivering and distrilniting the snowthereto, and means forming a water jacket su'pplied with water from saidmelting chamber surrounding-the sides and bottom of the combustionchamber.

27. A snow removing and melting apparatus comprising means forming aheating chamber, means forming an elongated melting chamber in heattransferring relation to said heating chamber, a conveyer traversing themelting chamber for delivering snow to the melting chamber anddistributing it therein, a pump for forcing and delivering .water alongthe length of the melting chamber against the snow delivered by saidconveyer, and means for heating the water so delivered from the heatingchamber.

28. A snow removing and melting apparatus having means forming a chamberfor receiving the snow, means for heating said chamber for melting thesnow, means forming a chamber to receive water from the melted snow, apump for'withdrawing water from the water chamber and forciblydischarging it into the street, and a connection through which said pumpdiverts a portion of the water and forcibly discharges it against thesnow in said first mentioned chamber.

29. A snow removing and melting apparatus comprising a truck, meansforming a heating chamber, means forming a melting chamber in whichthere is maintained a body of melted snow of substantial depth above theheating chamber, and means for adjustably tilting the melting chamber toadapt the level of the Water therein to dif-' fering grades.

In testimony whereof, I have signed my name to this specification.

ARTHUR H. BALLARD.-

endless conveyer traversing the same for delivering and distributing thesnow thereto, and means forming a water jacket su'pplied with water fromsaid melting chamber surrounding the sides and bottom of the combustionchamber.

27. A snow removing and melting apparatus comprising means forming aheating chamber, means forming an elongated melting chamber in heattransferring relation to said heating chamber, a conveyer traversing themelting chamber for delivering snow to the melting chamber anddistributing it therein, a pump for forcing and delivering. .wateralongthe length of the melting chamber against the snow delivered by saidconveyer, and means for heating the water so delivered from the heatingchamber.

28. A snow removing and melting apparatus having means forming a chamberfor receiving the snow, means for heating said a is hereby) certifiedimprovement in tinted specification requiring ore-the word meansinserts.

an elo ted means forming a line 72,0 "23 Signed ondsee'ed 'read meanschamber for melting the snow, means forming a chamber to receive waterfrom the melted snow, a pump for'withdrawing water from the waterchamber and forcibly discharging it into the street, and a connectionthrough which said pump diverts a portion of the water and forciblydischarges it against the snow in said first mentioned chamber.

29. A snow removing and melting apparatus comprising a truck, meansforming a heating chamber, means forming a melting chamber in whichthere is maintained a body of melted snow of substantial depth above theheating chamber, and means for adjustably tilting the melting chamber toadapt the level of the water therein to differing grades.

In testimony whereof, I have signed my name to this specification.

ARTHUR H. BALLARD.

Certificate of Correction. 7

, that in Letters Patent No. 1 ,476, v 1926, upon theagplication ofArthur H. Bslhwd, other! Snow Removing and Meltm Apparatus:

. correction as ale we: Page ,"linecorrections therein A.D.1926. qwu. aActing of loimtl.

a an in the claim 10, come; page 6, line 86, c 20, forithe wordselongated; seme peg? after he word chamber strike out the comma andinsert t e 73, same claim and that said that" the some may a a: Qctober12, usette,-for an Certificate of Correction.

It is hereby certified that in Letters Patent No. 1602,476, ted October12, 1926', upon theapplication of Arthur H. Ballard, of ilostonehusetts, for an improvement in Snow Removing and Meltin ,Appatat'us,ermrs a pear in the tinted specification requiring, correction asfliows: Page 5,'1ineclaim 10,

fore the word means insert a comma; page 6, line 36, chiim 20, for thewords an 0101: ted means forming a 'read means fawning an elongated;some pa line 72, 0 im '23 after the word chamber strike out the commaand insert gi e same to follow after the word chamber in 'line 73, someclaimilsnd that Che said Letters Patent should be read with thesecorrections therein t at the mmsi m,

conform to thereoord of the case in the Patent Oflice.

Signed and sealed this 9th doy of November, A. D, Acting 00mm ofPatents.

